<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">

    <!-- 引入react核心库 -->
    <script src="https://unpkg.com/react@17/umd/react.development.js"></script>
    <!-- 引入react-dom，用于支持react操作DOM -->
    <script src="https://unpkg.com/react-dom@17/umd/react-dom.development.js"></script>
    <!-- 引入babel，用于将jsx转为js -->
    <script src="https://unpkg.com/@babel/standalone/babel.min.js"></script>
    <!-- 引入prop-types -->
    <script src="https://cdnjs.cloudflare.com/ajax/libs/prop-types/15.8.1/prop-types.min.js"></script>
    <title>07-自定义显示人员信息组件</title>
</head>

<body>
    <!-- 准备好一个"容器" -->
    <div id="root"></div>
    <script type="text/babel">
        //创建组件
        class Person extends React.Component {

            //对标签属性进行类型、必要性的限制
            static propTypes = {
                name: PropTypes.string.isRequired, //限制name必传，且为字符串
                sex: PropTypes.string,//限制sex为字符串
                age: PropTypes.number,//限制age为数值
            }

            //指定默认标签属性值
            static defaultProps = {
                sex: '男',//sex默认值为男
                age: 18 //age默认值为18
                
            }

            render() {
                // console.log(this);
                const { name, age, sex } = this.props
                //props是只读的
                //this.props.name = 'jack' //此行代码会报错，因为props是只读的
                return (
                    <ul>
                        <li>姓名：{name}</li>
                        <li>性别：{sex}</li>
                        <li>年龄：{age + 1}</li>
                    </ul>
                )
            }
        }

        //渲染组件到页面
        ReactDOM.render(<Person name="jerry" />, document.getElementById('test1'))

    </script>
</body>

</html>